Rainbow Electronics MAX1587A - Manual (Page 26)

MAX1586A/MAX1586B/MAX1587A
High-Efficiency, Low-I
Q
PMICs with
Dynamic Core for PDAs and Smart Phones
26 ______________________________________________________________________________________
MAIN
BATT
PV1
BATT
TO
BATT STEP-DOWN
PWM
REG1
SLEEP
LDO
LX1
C12
4.7µF
C11
10µF
C19
0.1µF
C25
1µF
C24
1µF
C28
330pF
C27
270pF
C26
330pF
R20
1MΩ
R21
240kΩ
R18
1MΩ
R22
240kΩ
R23
240kΩ
R19
1MΩ C15
22µF
C16
22µF
C17
22µF
C13
4.7µF
C14
4.7µF
C20
0.01µF
C23
1µF
C22
1µF
C21
1µF
L1
3.3µH
L2
6.8µH
L3
10µH
PG1
V1
FB1
V2
FB2
PV2
ON
SLPIN IN
ON
STEP-DOWN
PWM
REG2
SLEEP
LDO
LX2
PG2
FB3
ON3
IN45
V4
BYP
ON4
ON5
IN6
ON6
V5
V6
PV3
TO BATT
TO V2
TO V2
TO BATT
PWM
LDO
REG
4
LDO
REG
5
STEP-DOWN
PWM
REG3
LX3
PG3
LDO
REG
6
V1
VCC_IO
3.3V
1300mA
V2
VCC_MEM
2.5V
900mA
V6
VCC_USIM
0V, 1.8V, 3.0V (DEF = 0V)
35mA
V4, VCC_PLL
1.3V, 35mA
V5
VCC_SRAM
1.1V, 35mA
V3
VCC_CORE
0.75V TO 1.3V
500mA
FROM CPU
PWR_EN
FROM CPU
SYS_EN
ON1
RUN
SLEEP
ON2
DBI (3.2V OR ADJ)
LBO
REF
1.25V
REF
UVLO
AND
BATT
MON
LBI (3.6V OR ADJ)
BKBT
DBO
SLP
TO V1
TO V1
TO V1
REG1 OK
POK
ADJ ON
SCL SDA
GND
I 2 C
SERIAL
CC1
V7, VCC_BATT
(ALWAYS ON)
FROM CPU
SYS_EN
V7
V1–V6
POWER-
OK
CC2
CC3
TO CPU
nRESET
TO CPU
nVCC-FAULT
RSO
MR
RESET INPUT
Li+
BACKUP
BATTERY
LOW-BATT
WARNING
TO CPU
nBATT_FAULT
V3
DAC
RAMP
C18
1500pF
SRAD
PWM3
V7
RESET
2.3V
65ms
MAX1586
100kΩ
Figure 5. MAX1586 Typical Applications Circuit. The MAX1587 omits some features. See the Pin Description section.